JPS6365439B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a positioning tool for a backing plate attached to a cut end of a column base or joint member used as a column of a steel frame structure. In particular, it is characterized in that positioning operations can be performed without moving the column base or the like.

(Prior Art) Recently, column steel has been widely used as a column material for steel structures. This column steel provides a structure with excellent seismic strength, but in order to achieve the specified strength, it is necessary to process the welded parts of each member according to standards. Roughly speaking, it reveals that it is actually weaker than conventional H-shaped steel. For this reason, the cut ends of column bases and joint members are beveled in advance, and then a backing metal is attached to this, followed by welding.

Of course, in this case, the edge of the backing metal becomes substantially the edge of the column pedestal, etc., so the backing metal needs to be accurately positioned and attached to the cut end of the column pedestal, etc.

For this reason, the present inventor invented a positioning tool for the backing metal, and has already filed an application (patent application
59-762391).

As shown in Fig. 4, a pair of positioning blocks 1 are positioned equidistantly from each other in the center of a base 2, and their inner surfaces serve as the ruler surfaces of the backing metal. The base 2 is connected to a linear movement mechanism 3 that moves the same amount in opposite directions so that it can be approached and separated, and a clip block 4 is provided in the center of the base 2. This product has the advantage that backing metals can be attached to both cut ends of the column base, etc. at the same time, so it can be processed with high dimensional accuracy. The positioning tool must be robust because the installation work must be done by Therefore, the positioning tool itself is heavy, and since the column base and the like are heavy objects, there are restrictions on the size of the tool in terms of handling, and the tool is limited to small objects such as joining blocks.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned drawbacks of the conventional positioning tool. In contrast to the previous installation work, the positioning tool was set on a column base, etc., and this enabled the positioning tool to be made smaller and lighter, dramatically improving work efficiency. It is something that

Hereinafter, the present invention will be specifically explained based on illustrated embodiments.

(Embodiment) In the figure, reference numeral 5 is a base, 6 is a sliding block, and 7 is a positioning block.

The base 5 is a so-called fixture for attaching a positioning tool to a desired position such as a column base in a predetermined posture, and is mounted on one side of the board 8 in a direction substantially perpendicular to the board 8. An auxiliary arm 9 is formed, and two or more engaging pins 10, 11 are provided protruding from the inner surfaces of both arms. These engaging pins 10 and 11 determine the actual mounting posture of the positioning tool on the column base, etc. When installing the positioning tool on the column base, etc., the engaging pin 10 and 11
is brought into contact with the upper surface of a column base, etc., and the engaging pin 11 is brought into contact with the side surface thereof. Reference numeral 12 is a magnet. This device fixes a positioning tool that is set at a predetermined position on a column base, etc., and although not shown, by operating a knob 13, it can be attached to and released from the column base, etc. It's summery.

The positioning block 7 is positioned in front of the cut end of the column base, etc. when the positioning tool is installed in a predetermined position on the column base, etc., and by bringing the cut end of the backing metal into contact with this. , to position the backing metal. Of course, in this case,
Regardless of the shape of the column base, etc., the cut end of the backing metal must be perpendicular to the longitudinal direction of the column base, etc., and it must be temporarily fixed to the column base, etc. in this state. The part of the positioning block 7 that comes into contact with the backing metal is, for example, in the shape of a frame that is substantially the same as the cut end of the backing metal, so that it can be welded at point a or point b shown in FIG. At the same time, the contact surface 14 with the backing metal is perpendicular to the longitudinal direction of the column base, etc., more specifically, to the plane including the tip of the engagement pin 10 and the plane including the tip of the engagement pin 11. It is becoming. The sliding block 6 moves the positioning block 7 forward and backward, thereby fixing the positioning block 7 at a desired position in front of the cut end of the column base, etc., and adjusting the amount of protrusion of the backing metal relative to the column base, etc. This device itself is attached to a sliding rail 15 provided on the top surface of the board 8 so as to be able to move forward and backward. And sliding block 6
A female spiral 16 is protruded from the upper surface of the , and a male spiral shaft 17 is attached between this and the substrate 8.
By rotating this male screw shaft 17, the sliding block 6 is moved back and forth by an amount proportional to the amount of rotation.

The positioning block 7 is formed to be detachable from the sliding block 6, and a block suitable for the cross-sectional size of the backing metal is attached to the sliding block 6.

(Function) To attach backing metal B to the cut end of column base A,
First, the positioning tool is placed at an appropriate position near the cut end of the column base A, and then it is moved laterally to bring the engagement pin 11 into contact with the side surface of the column base A. Then, the positioning tool is oriented in a direction parallel to the top and side surfaces of the column pedestal A, that is, in the same direction as the longitudinal direction of the column pedestal A, and the positioning block 7 is at right angles to the column pedestal. Operate the knob 13 to fix the positioning tool to the column base A. Next, the male threaded shaft 17 is rotated to fix the positioning block 7 in a predetermined position on the front of the column base A, and then the back plate B is pushed into the column until it hits the contact surface 14 of the positioning block 7. It protrudes from leg A and is temporarily fixed to column base A.

(Effects) As detailed above, the present invention has a sliding block 6 attached to a base 5 consisting of a base plate 8 and an auxiliary arm 9 so as to be able to move forward and backward, and a positioning block 7 attached to this sliding block 6. The structure is extremely simple, the positioning of the backing metal B is easy, and since it can be attached to a column base, etc., it can also be applied to large column bases, etc. Not only is this possible, but the operation of attaching it to a column base or the like becomes easier, and the efficiency of attaching the backing metal is greatly improved.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a partially exploded perspective view of the same as the above, FIG. 3 is a sectional view showing a working state, and FIG. 4 is a side view showing a conventional positioning tool. 5; Base, 6; Sliding block, 7; Positioning block, 8; Substrate, 9; Auxiliary arm, 10; Engagement pin, 11; Engagement pin, 12; Magnet, 13; Knob, 14; Contact surface , 15; rail, 16; female helix, 17; male helix.

Claims (1)

[Claims] 1. An auxiliary arm is formed on one side of the board in a direction substantially perpendicular thereto, a sliding block is attached to the top surface of the board so that it can move forward and backward, and a positioning block is attached to the tip of the sliding block, and A positioning tool for the backing metal, which is characterized by a fixing magnet attached to the bottom surface.